How I can add a cflag in cmake Android Studio?

How I can add -D_FILE_OFFSET_BITS=64 in Cmake config file. I'm trying to add as cflag in build.gradle but it not work.

    externalNativeBuild {
        cmake {
            cppFlags ""
            cFlags "-D_FILE_OFFSET_BITS=64"
            arguments "-DANDROID_TOOLCHAIN=gcc"
        }
    }